Method of making car-stakes.



PATENVTBD SEPT. 25, 1906.

E. I. DODDS.

. METHOD OF MAKING GAR STAKES.

APPLICATION FILED AUG.23. 1906.

4 SHEETS-SHEET 1.

No. 831,839. PATENTED SEPT. 25, 1906.

nLnonns.

METHOD OF MAKING OAR STAKES.

APPLICATION FILED AUG.23.1905.

4 SHEETS-SHEET 3.

No. 831,839. I PATENTED SEPT. 25, 1906.

. E. I. DODDS.

METHOD OF MAKING CAR STAKES.

APPLICATION F-ILBD AUG. 23.1906.

4 SHEETS-SHEET 4.

I f wd;

hollow taperin rrnrrnn stares PATENT eerie.

ETHAN I. DODDS, OF PULLMAN. ILLINOIS, ASSIGNOR TO THE PULLMAN COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

METHOD OF MAKING GAR-STAKES.

Patented Sept. 25, 1906.

provements in Methods of Making Car-Stakes,

of which the following is a s ecification.

In order to economicaly manufacture sheet-metal car-stakes, I have devised the following method which es ecially recommends itself to those skille in the art because of the ease, rapidity, and comparatlvely low cost with which the stakes may be produced. The stakes in completed form each comprise a sheet-metal base, preferably rectangular in shape and having pressed out ofthe plane thereof one or more integral ribs with rounded outer backs. .It has con customary heretofore to make one stake of this type at a time, trimmmg the base portion to sha e after pressing or stem ing out the rib. 1V y invention involves t e manufacture of'a number of these stakes simultaneously from a single sheet of metal. Where several stakes are to be made at once, as a preliminary pre aration of the sheet for the main operation presstherein several comparatively small longitudinal and transverse temporary ribs spaced apart in correspondence to the width and length of the stakes for the purpose of providing at'the proper places metal which will be needed to e rawn in by the dies to form the large permanent taperin ribs of the stakes. The latter ribs are t en formed in the sheet by means of dies and pressure, the alternating longitudinal rows being pressed out of the plane of the sheet in opposite directions upwardly and downwardly, so as not to unduly draw the metal in the stampin operation, and also having the narrow en s of the ribs extending in opposite directions. The remaining portions of the tem orary ribs which have not been drawn at by the stamping of the ta ering stake-ribs are then pressed into the p ane of the sheet and the at'ter is trimmed and cut so that each stake has one taperin rib.

If desired, al of the tapering ribs may be stamped in the sheet parallel to each other, the intervening temporary ribs having first been supplied to the sheet and the tapering ribs being disposed with their narrow ends extending-alternately in opposite directions.

On the accompanying drawings I have illustrated the method of making car-stakes according to my invention, like reference characters thereon referring to the same parts throughout. I

Figure l is a face view of a metal sheet after having been supplied with temporary longitudinal and transverse ribs. Fig. 2 is an edge view of the metal sheet shown in Fig. 1. Fig. 3 is a face view of the sheet shown in Fig. 1 after the same has been operated upon topress the tapering stake-ribs out of the plane thereof. Fig. 4 is an edge view'of the sheet shown in Fig. 3. Fig. 5 is a perspective view of a sheet with four parallel tapering embossed-ribs, showing also the remaining portions of the temporar ribs. perspective view of the s eet shown in Fig. 5 after'the remnants of the temporary ribs have been pressed flat and the sheet trimmed to the proper size. sheet upon which there have been embossed four tapering ribs, the sheet having also been trimmed. Fig. 8 is an edge view of the sheet shown in Fig. 7. Fig. 9 is a cross-section on the line 9 9 of Fig. 7.

Referring to Fig. 1, temporary parallel longitudinal ribs 11 and 12 are embossed on or pressed out ofthe plane of a rectangular sheet of metal 10, the ribs being spaced apart a distance substantially equal to the width of the base-plate of the finished stake. These ribs are pressed alternately upward and downward, as shown, ribs 11 projecting upwardly, the rib 12 extending downwardly. Transverse temporary ribs 13 and 14 are also embossed on the sheet, the ribs extending alternately in opposite directions, the ribs 13 protruding upwardly, as shown,.and ribs 14 downwardly. Although in the drawings I have shown but three of these transverse ribs, it is evident that a sheet of practically any length may be employed with a number of transverse ribs corresponding to the Flg. e is a.

Fig. 7 is a face. view of a length of the sheet dividing the same into parts of substantially the length of the finished stake. On each of the flat portions of the sheet there is then stamped or embossed a tapering rib out of the plane thereof, as shown in Fig. 3, the alternative ribs 15 being pressed upwardly and the alternative ribs 16 eing stamped downwardly, the tapering ends of ribs 15 pointin in one direction, while the tapering ends 0 ribs 16 point in opposite direction. By this stamping operation the metal disposed in the temporary ribs 11 and 12 is drawn laterally to form portionsof the tapering ribs. The latter also draw metal from the transverse ribs 13 and 14, thus leaving the short portions of the temporary ribs, as shown in Fig. 3. In order to prepare this sheet for the operation of cutting the stakes apart, the remaining portions of the temporary ribs are pressed into the plane of the sheet, which is afterward cut lorfgitudinally and transversely on substantially the lines where the temporary ribs eX- isted, so that each stake will have a single tapering rib.

Where but four parallel ribs are pressed from the sheet at the same time, the sheet assumes the shape shown in Fi 5. The short portions of the temporary ribs 11 and 12 are then pressed fiat, the sheet being subsequently trimmed on the dotted lines shown in Fig. 5, thus producing a sheet of the shape and size illustrated in Fi 6. To separate the stakes, I shear the s eet shown in the latter figure on the lines 17, thus forming four stakes, each with a rectan ular base arid stakes, which consists in pressing in opposite an embossed tapering rib, as s own.

Figs. 7, 8, and 9 show more clearly the construction'of the tapering ribs and the manner in which they are stamped alternately in opposite directions out of the plane of the sheet.

It is apparent that the number of ribs stamped in the sheet is quite immaterial, and although I have illustrated several sets of four parallel ribs each the number of sets and the number in each set, as well as the size of the sheet, can be varied to any extent desired. The advantage of using the temporary ribs has been made clear as described above; but the stakes can be manufactured without the use of such temporary ribs, although the metal would perhaps be unduly drawn in such an operation. Instead of pressing the tem orary ribs in opposite directions they may he all stamped so as to proect from only one face of the sheet, such a method operating nearly as well as where the ilbS project from each-side of the sheet. It 1s also evident that the completed stake may have more than one rib projecting outwardly from its face, if desired, the recess of manufacture being corresponding y modified.

I claim- 1. The method of manufacturing carstakes, which consists in stamping ribs alternately in opposite directions out of the plane of a metal sheet, and cutting the sheet so that each stake will have one of said ribs, substantially as described.

2. The method of manufacturing carstakes, which consists in pressing temporary ribs out of the plane of a metal sheet,stamping stake-ribs out of the plane of said. sheet, and cutting the sheet so that each stake will have one of said latter ribs, substantially as described.

3. The method of manufacturing carstakes, which consists in pressing temporary ribs out of the plane of a metal sheet, stamping stake-ribs alternately in opposite directions out of the plane of said sheet, and cutting the sheet-so that each stake will have one of said latter ribs, substantially as described.

4. The method of manufacturing carstakes, which consists in pressing temporary ribs alternately in opposite directions out of the plane of a metal sheet, stamping stakeribs alternately in opposite directions out of the plane of said sheet, and cutting the sheet so that each stake will have one of said latter ribs, substantially as described.

5. The method of manufacturing carstakes, which consists in pressing out of the plane of a metal sheet temporary longitudinal and transverse ribs, stamping stake-ribs out of the plane of said sheet, and cuttlng the sheet so that each stake will have one of said I latter ribs, substantially as described.

6. The method of manufacturing cardirections out of the plane .of a metal sheet temporary longitudinal and transverse ribs, stamping stake-ribs out of the plane of said sheet, and cutting the sheet so that each stake will have one of said latter ribs, substantially as described.

' 7. The method of manufacturing car-' stakes, which consists in pressing alternately in opposite directions out of the plane of a metal sheet temporary longitudinal and transverse ribs, stamping stake-ribs alternately in opposite directions out of the plane of the said sheet, and cutting the sheet so that each stake will have one of said latter ribs, substantially as described.

8. The method of manufacturing carstakes, which consists in stamping tapering ribs alternately in opposite directions out of the plane of a metal sheet, and cuttin the sheet so that each stake will have one 0 said ribs, substantially as described.

9. The method of manufacturing carstakes, which consists in stampin parallel tapering ribs out of the plane 0 a metal sheet, said ribs having their broad and narrow ends alternating, and cutting the sheet so that each stake will have one of said ribs, substantially as described.

10; The method of manufacturing carstakes, which consists in stamping parallel tapering ribs alternately in opposite directions out of the plane of a metal sheet, the

said ribs being disposed with their broad and narrow ends alternating, and cutting said sheet so that each stake will have one of said ribs, substantially as described.

11. The method of manufacturing car- .stakes, which consists in pressing temporaryribs alternately in op osite directions out of the plane of a metal s eet, stamping tapering stake-ribs alternately in opposite directions out of the plane of said sheet, and cutting the sheet so that each stake will have one of said stake-ribs, substantially as described.

12. The method of manufacturing carstakes, which consists in pressing temporary ribs alternately in op osite directions out of the plane of a metal s ieet, stamping tapering stake-ribs alternately in opposite directions out of the plane ofsaid sheet, said tapering ribs being disposed with their narrow ends extending alternately in opposite directions, and cutting the sheet so that each stake will have one of said ribs, substantially as de-' scribed.

Y 13. The method of manufacturing carstakes, which consists in pressing longitudi nal and transverse temporary ribs out of the plane of a metal sheet, stamping tapering stake-ribs out of the plane of the fiat portions of said sheet, alternate lon 'tudinal rows of said tapering ribs having t eir narrow ends extending in opposite directions, and cutting the sheet so that each stake will have one of said ribs, substantially as described.

14. The method of manufacturing carstakes, which consists in pressing longitudinal and transverse temporary ribs alternately in" op osite directions out of the planeof a meta sheet, stampin tapering stake-ribs out of the fiat portions 0 the sheet, the alternate longitudinal rows of said. stake-ribs being stamped in opposite directions out of the plane of the fiat portionsand being disposed with their narrow ends' extending in opposite directions, and cutting said sheet so that each stake will have one of said ribs, substantially as described.

Signed by me at Chicago, Illinois, this 18th day of. August, 1905, in the presence of two wltnesses.

ETHAN I. DODDS.

Witnesses FREDERICK O. Goonwm, WALTER M. FULLER. 

